aking LVM snapshots as a mean of backing up MySQL is rather simple, as can be described here. However, if you are into security, you would strive to grant minimal permissions for the action to the MySQL user. Per MySQL Documentation, the required privileges is “RELOAD”. That should be enough, granted on *.*, of course.
Unlike VMware Server, Xen’s HyperVisor does not allow an easy collection of performance information. The management machine, called “Domain-0” is actually a privileged virtual machine, and thus – get its own small share of CPUs and RAM. Collecting performance information on it will lead to, well, collecting performance information for a single VM, and not…
I have had a system panicking when running the mentioned below configuration: RedHat RHEL 4 Update 6 (4.6) 64bit (x86_64) Dell PowerEdge servers Oracle RAC 11g with Clusterware 11g EMC iSCSI storage EMC PowerPate Vote and Registry LUNs are accessible as raw devices Data files are accessible through ASM with libASM During reboots or shutdowns,…
It appears in some cases, for some pieces of software (anyone said “open source and poorly documented?”) that every installation has its own quirks and issues. It seems that following the same pattern is not always enough. It can be caused by the day you have selected to download and use the external component which…
I was required to write a small listener. This listener doesn’t have to do anything fancy – it has to process input from a network source (over TCP) and shove it into a file with random name. The quick and dirty solution is to use netcat (nc). A short command such as this would do…
It’s either me, or NetworkManager sux. This is the most incomplete and incompetent piece of software I have ever seen. The only reason I actually use it is that there is no better alternative which does whatever NetworkManager manages, somehow, to do. My initial thought was to setup NetworkManager as the dial-up component. What should…
